PC does not want to continue to reset?

Hi. I have the following problem. I want to give my laptop with Windows 10 to my brother but I want my data to be gone.

Then I looked at Yt and how I did it.

It says that it can take a few minutes. But now it is still there after 14h that it is 86%. Can someone give me tips on what it is or whether it is normal that it takes so long. Thanks in advance.

Restart and hope that the bootloader is not in the ram.

Either on the internet connection or there's a problem with your data

(Encrypted data etc.) you have to delete them first (yourself).

Forced out.

They are often finished.

But I would install completely new.